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3 years ago

A plane took off at a 15° angle to the ground and flew in Sydney's direction. She is standing at a point 25 miles from the

Mathematics

1 answer:

svlad2 [7]3 years ago

3 0

Answer: The Answer is <u>A: 7.685</u> but then round it up to <u>8</u> on edge

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Someone please help me with this

alexgriva [62]

Answer:

Value of x: 72, first option

Step-by-step explanation:

The sum of angles in a triangle is 180 degrees. In order to find x, one of the angles, add the other two angle measures subtracted from the sum of angles (180) as such:

180 - (51 + 57) =

180 - 108 =

x - 72 degrees

5 0

3 years ago

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Check Your Understanding Are you more likely to win a random drawing if you crinkle the paper that contains your name before put

IRINA_888 [86]

Answer: hello your question to the given scenerio is missing below is the missing question

question: Does this setting represent a Binomial distribution ?

answer : Yes the setting represents a Binomial distribution

Step-by-step explanation:

The setting represents a Binomial distribution, because the criteria's for a Binomial distribution is all present which are

The random variable ( number of times a crinkled paper is picked ) is represented as Y
Each sample is drawn independently and with replacement
there are only two outcomes ( success or failure )
Number of trials is given as 10
probability of success = 25 / 100 = 0.25

4 0

3 years ago

What is X when 211 base X is equal to 152 base 8?

Deffense [45]

$211_x=2x^2+x+1$
$152_8=1\cdot8^2+5\cdot8+2=106_{10}$

$2x^2+x+1=106$
$2x^2+x-105=0$
$2\left(x+\dfrac{15}2\right)(x-7)=0$

$\implies x=-\dfrac{15}2\text{ or }x=7$

Presumably $x$ is a non-negative integer, which leaves $x=7$ , though it's not to say that rational solutions aren't necessarily excluded.

8 0

4 years ago

A telemarketer makes a sale on 25% of his calls. If he makes 300 calls in a night, what is the probability that he will make mor

Nina [5.8K]

Answer: 0.7258

Step-by-step explanation:

Given : A telemarketer makes a sale on 25% of his calls.

i.e. p=0.25

He makes 300 calls in a night, i.e. n=300

Let x be a random variable that represents the number of calls make in night.

To convert the given binomial distribution to normal distribution we have :-

$\mu=np=300(0.25)=75$

$\sigma=\sqrt{p(1-p)n}=\sqrt{(0.25)(1-0.25)(300)}\\\\=\sqrt{56.25}=7.5$

Now, using $z=\dfrac{x-\mu}{\sigma}$ , the z-value corresponds to x= 70 :-

$z=\dfrac{70-75}{7.5}\approx-0.67$

The z-value corresponds to x= 90 :-

$z=\dfrac{90-75}{7.5}\approx2$

By using the standard normal distribution table for z, the probability that he will make more than 70 sales but less than 90 sales:-

$P(-0.67$

Hence, the probability that he will make more than 70 sales but less than 90 sales= 0.7258

6 0

3 years ago

Find f(x) if it is known that f(x−2)=2x−4

bezimeni [28]

Answer:

f(x) = 2x

Step-by-step explanation:

Remark

What I'm about to do is probably not the best way to do this question, but it is right. The plan is to take out a common factor on the right of f(x - 2) and then derive f(x) from that.

Solution

f(x - 2) = 2x - 4 Take out a common factor on the right of f(x -2)
f(x - 2) = 2(x - 2) Now what that means is that in the original equation, wherever you saw an x, you put in x - 2. So the original equation must have been

Check

f(x) = 2x To check this put x - 2 back in
f(x - 2) = 2(x -2) Remove the brackets.
f(x - 2) = 2x - 4 which is what it should be.

3 0

3 years ago

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